Phosphorus Interactions with Iron in Undisturbed and Disturbed Arctic Tundra Ecosystems.
Phosphorus (P) limitation often constrains biological processes in Arctic tundra ecosystems. Although adsorption to soil minerals may limit P bioavailability and export from soils into aquatic systems, the contribution of mineral phases to P retention in Arctic tundra is poorly understood. Our objec...
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American Chemical Society
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Online Access: | https://doi.org/10.1021/acs.est.3c09072 https://pubmed.ncbi.nlm.nih.gov/38889135 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11223478/ |
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ftpubmed:38889135 2024-09-15T18:39:05+00:00 Phosphorus Interactions with Iron in Undisturbed and Disturbed Arctic Tundra Ecosystems. Berens, Matthew John Michaud, Alexander Bryce VanderJeugdt, Erin Miah, Imtiaz Sutor, Frederick W Emerson, David Bowden, William B Kinsman-Costello, Lauren Weintraub, Michael N Herndon, Elizabeth M 2024 Jul 02 https://doi.org/10.1021/acs.est.3c09072 https://pubmed.ncbi.nlm.nih.gov/38889135 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11223478/ eng eng American Chemical Society https://doi.org/10.1021/acs.est.3c09072 https://pubmed.ncbi.nlm.nih.gov/38889135 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11223478/ Environ Sci Technol ISSN:1520-5851 Volume:58 Issue:26 Fe redox cycling X-ray absorption spectroscopy biogenic Fe mats phosphorus soil disturbance tundra soils Journal Article 2024 ftpubmed https://doi.org/10.1021/acs.est.3c09072 2024-07-06T16:01:00Z Phosphorus (P) limitation often constrains biological processes in Arctic tundra ecosystems. Although adsorption to soil minerals may limit P bioavailability and export from soils into aquatic systems, the contribution of mineral phases to P retention in Arctic tundra is poorly understood. Our objective was to use X-ray absorption spectroscopy to characterize P speciation and associations with soil minerals along hillslope toposequences and in undisturbed and disturbed low-lying wet sedge tundra on the North Slope, AK. Biogenic mats comprised of short-range ordered iron (Fe) oxyhydroxides were prevalent in undisturbed wet sedge meadows. Upland soils and pond sediments impacted by gravel mining or thermokarst lacked biogenic Fe mats and were comparatively iron poor. Phosphorus was primarily contained in organic compounds in hillslope soils but associated with Fe(III) oxyhydroxides in undisturbed wet sedge meadows and calcium (Ca) in disturbed pond sediments. We infer that phosphate mobilized through organic decomposition binds to Fe(III) oxyhydroxides in wet sedge, but these associations are disrupted by physical disturbance that removes Fe mats. Increasing disturbances of the Arctic tundra may continue to alter the mineralogical composition of soils at terrestrial-aquatic interfaces and binding mechanisms that could inhibit or promote transport of bioavailable P from soils to aquatic ecosystems. Article in Journal/Newspaper Thermokarst Tundra PubMed Central (PMC) Environmental Science & Technology 58 26 11400 11410 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Fe redox cycling X-ray absorption spectroscopy biogenic Fe mats phosphorus soil disturbance tundra soils |
spellingShingle |
Fe redox cycling X-ray absorption spectroscopy biogenic Fe mats phosphorus soil disturbance tundra soils Berens, Matthew John Michaud, Alexander Bryce VanderJeugdt, Erin Miah, Imtiaz Sutor, Frederick W Emerson, David Bowden, William B Kinsman-Costello, Lauren Weintraub, Michael N Herndon, Elizabeth M Phosphorus Interactions with Iron in Undisturbed and Disturbed Arctic Tundra Ecosystems. |
topic_facet |
Fe redox cycling X-ray absorption spectroscopy biogenic Fe mats phosphorus soil disturbance tundra soils |
description |
Phosphorus (P) limitation often constrains biological processes in Arctic tundra ecosystems. Although adsorption to soil minerals may limit P bioavailability and export from soils into aquatic systems, the contribution of mineral phases to P retention in Arctic tundra is poorly understood. Our objective was to use X-ray absorption spectroscopy to characterize P speciation and associations with soil minerals along hillslope toposequences and in undisturbed and disturbed low-lying wet sedge tundra on the North Slope, AK. Biogenic mats comprised of short-range ordered iron (Fe) oxyhydroxides were prevalent in undisturbed wet sedge meadows. Upland soils and pond sediments impacted by gravel mining or thermokarst lacked biogenic Fe mats and were comparatively iron poor. Phosphorus was primarily contained in organic compounds in hillslope soils but associated with Fe(III) oxyhydroxides in undisturbed wet sedge meadows and calcium (Ca) in disturbed pond sediments. We infer that phosphate mobilized through organic decomposition binds to Fe(III) oxyhydroxides in wet sedge, but these associations are disrupted by physical disturbance that removes Fe mats. Increasing disturbances of the Arctic tundra may continue to alter the mineralogical composition of soils at terrestrial-aquatic interfaces and binding mechanisms that could inhibit or promote transport of bioavailable P from soils to aquatic ecosystems. |
format |
Article in Journal/Newspaper |
author |
Berens, Matthew John Michaud, Alexander Bryce VanderJeugdt, Erin Miah, Imtiaz Sutor, Frederick W Emerson, David Bowden, William B Kinsman-Costello, Lauren Weintraub, Michael N Herndon, Elizabeth M |
author_facet |
Berens, Matthew John Michaud, Alexander Bryce VanderJeugdt, Erin Miah, Imtiaz Sutor, Frederick W Emerson, David Bowden, William B Kinsman-Costello, Lauren Weintraub, Michael N Herndon, Elizabeth M |
author_sort |
Berens, Matthew John |
title |
Phosphorus Interactions with Iron in Undisturbed and Disturbed Arctic Tundra Ecosystems. |
title_short |
Phosphorus Interactions with Iron in Undisturbed and Disturbed Arctic Tundra Ecosystems. |
title_full |
Phosphorus Interactions with Iron in Undisturbed and Disturbed Arctic Tundra Ecosystems. |
title_fullStr |
Phosphorus Interactions with Iron in Undisturbed and Disturbed Arctic Tundra Ecosystems. |
title_full_unstemmed |
Phosphorus Interactions with Iron in Undisturbed and Disturbed Arctic Tundra Ecosystems. |
title_sort |
phosphorus interactions with iron in undisturbed and disturbed arctic tundra ecosystems. |
publisher |
American Chemical Society |
publishDate |
2024 |
url |
https://doi.org/10.1021/acs.est.3c09072 https://pubmed.ncbi.nlm.nih.gov/38889135 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11223478/ |
genre |
Thermokarst Tundra |
genre_facet |
Thermokarst Tundra |
op_source |
Environ Sci Technol ISSN:1520-5851 Volume:58 Issue:26 |
op_relation |
https://doi.org/10.1021/acs.est.3c09072 https://pubmed.ncbi.nlm.nih.gov/38889135 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11223478/ |
op_doi |
https://doi.org/10.1021/acs.est.3c09072 |
container_title |
Environmental Science & Technology |
container_volume |
58 |
container_issue |
26 |
container_start_page |
11400 |
op_container_end_page |
11410 |
_version_ |
1810483485045948416 |